Relationship Between Foveal Threshold and Visual Acuity Using the Humphrey Visual Field Analyzer - 21/08/11
Inquiries to Christina J. Flaxel, Casey Eye Institute, 3375 SW Terwilliger Blvd., Portland, OR 97239Résumé |
Purpose |
Evaluate Humphrey visual field (VF) analyzer central 30-2 foveal threshold test for best-corrected visual acuity.
Design |
Consecutive case series.
Methods |
Both eyes (n = 117) of 59 patients with diseased and healthy eyes presenting for VF analysis were evaluated to determine foveal threshold. This was compared with uncorrected visual acuity converted to logMAR, determined by manifest refraction, or estimated from Snellen visual acuity with pinhole.
Results |
Foveal threshold correlated with logMAR uncorrected visual acuity for right (P < .0001) and left eyes (P < .0001) and logMAR best-corrected visual acuity for right (P < .0001) and left eyes (P < .0001). Sixty-eight percent of eyes with visual acuity <20/50 had foveal threshold of 0 to 30; 47% with visual acuity of >20/20 had foveal threshold better than 37.
Conclusions |
Foveal threshold measurement appears to provide a reliable estimate of best-corrected visual acuity. This method may usefully predict visual acuity in eyes with possible nonorganic visual acuity loss.
Le texte complet de cet article est disponible en PDF.
Vol 143 - N° 5
P. 875-877 - mai 2007 Retour au numéro
Article précédent
- Anterior Segment Optical Coherence Tomography Imaging of Trabeculectomy Blebs Before and After Laser Suture Lysis
- Mandeep Singh, Tin Aung, David S. Friedman, Ce Zheng, Paul J. Foster, Winifred P. Nolan, Jovina L. See, Scott D. Smith, Paul T.K. Chew
- Anterior Segment Optical Coherence Tomography for Imaging the Anterior Chamber After Laser Peripheral Iridotomy
- Farnaz Memarzadeh, Yan Li, Vikas Chopra, Rohit Varma, Brian A. Francis, David Huang
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?